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Method and device for eliminating rust on surface of strip steel

A technology for removing strips and steel strips, which is applied in the field of cold rolling and pickling, and can solve the problems of scrapping of small coils of strip steel and rust spots on the surface of strip steel

Inactive Publication Date: 2017-12-22
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for eliminating corrosion on the surface of the steel strip, which is used to solve the problem of staying in the rinsing tank due to maintenance or long-term shutdown in the pickling production line in the prior art. rust spots on the strip steel surface of the drier and dryer, resulting in the technical problem of rejecting small coils of strip steel

Method used

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  • Method and device for eliminating rust on surface of strip steel
  • Method and device for eliminating rust on surface of strip steel

Examples

Experimental program
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Embodiment 1

[0032] In order to fully understand the method of this article, first introduce the process equipment of the pickling production line. The equipment mainly includes: 1# looper, the first deviation correction roller, the first tension roller, the tension leveler, the second tension roller, and the pickling tank , rinsing tank, dryer, second tension roller, second correction roller and 2# looper. Then the strip passes through the above equipment sequentially during the acid rolling process.

[0033] Correspondingly, this embodiment provides a method for eliminating corrosion on the surface of strip steel, which is applied to the above-mentioned pickling production line, such as figure 1 As shown, the method includes:

[0034] S101, receiving a reversing instruction, and controlling the first wringing roller at the entrance of the pickling tank and the second wringing roller at the exit of the rinsing tank to be in a depressed state based on the reversing instruction;

[0035] ...

Embodiment 2

[0047] Corresponding to Embodiment 1, this embodiment also provides a device for eliminating corrosion on the surface of strip steel, such as figure 2 As shown, the device includes: a first receiving unit 21, a first control unit 22, a second control unit 23, a second receiving unit 24, and a third control unit 25; wherein,

[0048] After the first receiving unit 21 receives the reversing instruction, the first control unit 22 is also used to It is judged whether the pickling production line has the conditions for reversing. If it is determined that the conditions for reversing are met, the first squeezing roll at the entrance of the pickling tank and the second squeezing roll at the exit of the rinsing tank are controlled based on the reverse command to be in a depressed state. A control message for controlling the first squeezing roller and the second squeezing roller is written in the reversing command.

[0049] The reversing conditions may include: the amount of the firs...

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Abstract

The invention provides a method and a device for eliminating rust on a surface of strip steel, and the method and the device are applied to a pickling line. The method comprises the following steps of: receiving a reversing instruction; controlling a first drying roll at an inlet of a pickling slot and a second drying roll at an outlet of a rinsing slot to be in a pressed state based on the reversing instruction; controlling strip steel to return to an initial position according to preset reversing length and preset reversing speed; and receiving an advancing instruction, and controlling the strip steel to operate into the pickling slot according to preset advancing length and preset advancing speed based on the advancing instruction, and pickling the surface of the strip steel. In this way, when the surface of the strip steel has rust, the pickling line can be controlled to operate in a reversed mode, so that the strip steel operates to the initial position, and the pickling line is controlled to advance for performing pickling on the surface of the strip steel again, and therefore, rust on the surface of the strip steel can be eliminated, quality of the strip steel is improved and a scrap rate of the strip steel is reduced.

Description

technical field [0001] The invention belongs to the technical field of cold rolling and pickling, and in particular relates to a method and a device for eliminating corrosion on the surface of strip steel. Background technique [0002] The pickling production line is mainly composed of two processes of pickling and rolling. After the strip is pickled in the pickling tank, it is rolled under load; however, if the pickling production line fails and needs to be repaired, it will be repaired due to maintenance or long-term shutdown. It causes rust spots on the surface of the steel strip staying in the rinsing tank and dryer, which affects the surface quality of the steel strip, and the part with serious corrosion needs to be judged to be scrapped in small rolls. Contents of the invention [0003] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for eliminating corrosion on the surface of the steel strip, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G3/02
CPCC23G3/027C23G3/025C23G3/029
Inventor 高峰沈福磊张建成刘志刚李生存于旭赵兴王健顺郝超张树亮
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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